余天蓝;程功;曼苏尔·那斯尔;赵世荣;牛莹莹;赵英;廖康;

• 1:新疆农业大学特色果树研究中心
• 2:新疆林业厅

摘要(Abstract)：

【目的】揭示新疆不同居群野生沙棘资源的遗传多样性和变异规律,为其开发利用和保护提供参考。【方法】对新疆阿勒泰、伊犁、阿克苏等地野生沙棘共6个居群48个单株的8个果实性状进行测量,采用变异系数、多样性指数、巢式方差分析、主成分分析等方法对其多样性进行分析。【结果】新疆野生沙棘果实性状在居群内和居群间存在丰富的多样性,居群间果实性状分化均值为37.23%,小于居群内的62.77%;性状分化系数最大的是总酸含量(65.57%),最小的是果肉颜色(5.83%)。Simpson指数和Shannon-weaver指数均为哈巴河居群最大。果实性状平均变异系数为40.11%,变异幅度为21.77%~74.34%,各性状变异系数之间差异较大,其中果实颜色平均变异系数最大(74.34%),总糖含量平均变异系数最小(21.77%)。果实颜色、种子颜色、总酸含量、总糖含量前4个主成分累计贡献率为81.46%。【结论】新疆野生沙棘果实性状存在较高的差异及分化,果实颜色的性状变异最大;居群内的变异是新疆野生沙棘果实性状变异的主要来源;哈巴河居群果实性状多样性最丰富,果实性状差异主要体现在果实颜色、种子颜色、总酸含量、总糖含量等。

关键词(KeyWords)： 新疆野生沙棘;天然居群;果实性状;多样性

Abstract:

Keywords:

基金项目(Foundation): 中央财政推广项目(2016TG06);; 新疆维吾尔自治区园艺学重点学科基金

作者(Author): 余天蓝;程功;曼苏尔·那斯尔;赵世荣;牛莹莹;赵英;廖康;

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DOI:

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